1. Is Youtube channel monetized? - This extension provides information about whether a YouTube channel is monetized or not. It adds a badge to the channel's icon to indicate whether it is monetized or not.**https://chromewebstore.google.com/detail/is-youtube-channel-moneti/fimmmbaooeckajklhkfnfcoahlncoikn**
  2. Addon crop youtube downloader - This extension allows you to crop and download a specific part of a YouTube video. It is useful if you only need a portion of a video rather than the entire thing. **https://chrome.google.com/webstore/detail/addoncrop-youtube-downlo/peemkfegpmjpmbokiblnfahmkaoobndn**
  3. Imagus - This extension enables you to view images and videos by hovering over links. It is useful for previewing videos without having to click on them. **https://chrome.google.com/webstore/detail/imagus/immpkjjlgappgfkkfieppnmlhakdmaab**
  4. Color picker - This extension allows you to select any color on a webpage and get its corresponding hex code. It is useful for web developers and designers. **https://chrome.google.com/webstore/detail/color-picker/kajaljehpdpdeagjebfgmgebdhbnkijo**
  5. Youtube GTP - This extension allows you to customize the YouTube interface by changing the background color and adding a custom thumbnail. It also allows you to hide certain elements of the YouTube interface. **https://chrome.google.com/webstore/detail/youtube-gtp/cldgmkfahfnglmljnbmfealpgjcohpbl**
  6. CreatorML - This extension provides creators with analytics and insights for their YouTube channel. It allows you to track the growth of your channel and analyze your audience's engagement. **https://chrome.google.com/webstore/detail/creatorml/ncljflpkbojpcpehickojgcfgpgonejo**
  7. VidIQ - This extension provides insights and analytics for YouTube creators, including keyword research, competitor analysis, and video optimization. It is useful for improving the performance of your videos on YouTube. **https://chrome.google.com/webstore/detail/vidiq-vision-for-youtube/pachckjkecffpdphbpmfolblodfkgbhl**
  8. Keyword everywhere - Extension that shows search interest for keywords https://chrome.google.com/webstore/detail/keywords-everywhere-keywo/hbapdpeemoojbophdfndmlgdhppljgmp
  9. Google picture in picture - Watch youtube videos in a floating window https://chrome.google.com/webstore/detail/picture-in-picture-extens/hkgfoiooedgoejojocmhlaklaeopbecg
  10. Is youtube channel monitized - Check if youtube channels or videos are monitized https://chrome.google.com/webstore/detail/is-youtube-channel-moneti/ijonaoomgjhjacfmipjlfdobddhfnkjn
  11. Addon crop downloader - download youtube videos, audio’s and take screenshots from videos

https://addoncrop.com/v17/youtube-downloader/